REV13940

• Permit No: M1977342
• IBM Index Class Name: Revision
• Doc Date: 8/4/1995
• Doc Name: RATIONALE FOR PUBLIC NOTICE
• Type & Sequence: AM2
• Media Type: D
• Archive: No

• " PART I
Page lc(ii) of 20
Permit No. CO-0041467
A. TERMS AND CONDITIONS
2. Effluent Limitations Discharee Point 004
Beginning July 8, 1993 and lasting through ]uly 8, 1996 the petmittee is authorized to discharge from
outfall(s) serial number(s): 004 the combined Flows from the Upper tailings pond underdrain, the Lower
tailings pond underdram, and the Urad portal. No discharge is allowed from the Urad portal other than
through this discharge point.
Parameter
30 Dav Ave al Limitation
7 Dav Ave bl
D:aily Max c/
Flow, MGD
October -May Report NA Report
June -July Report NA Report
August -September Report NA Report
TSS, mg/1 30 45 NA
Potentially Dissolved Aluminum, mg/I I/
Report NA Report
Potentially Dissolved Arsenic, mg/1
October -May 0.40 NA 0.97
June -July 0.98 NA 1.16
August -September 0.50 NA 0.62
Potentially Dissolved Cadmium, mg/I 1/
October -May 0.0054 NA Report
June -July 0.0164 NA Report
August -September 0.0075 NA Report
Potentially Dissolved Cluomium VI, mg/1
October -May 0.030 NA 0.043
June -July 0.072 NA 0.105
August -September 0.037 NA 0.054
Potentially Dissolved Copper, mg/1 1/
October -May 0.030 NA 0.042
June -July 0.026 NA 0.033
August -September 0.023 NA 0.029
Total Recoverable Iron, mg/I
October -May 2.5 NA Report
lone -July 5.9 NA Report
August -September 3.1 NA Report
Potentially Dissolved Lead, mg/1 1/
October -May 0.012 NA 0.294
June -July 0.005 NA 0.105
August -September 0.006 NA 0.132
Y
7
amended 04/27/92 effective 06/01/92
amended 05128/93 effective 07101/93
amended effective